US6663813B2 - Method for cooling molded articles - Google Patents
Method for cooling molded articles Download PDFInfo
- Publication number
- US6663813B2 US6663813B2 US09/931,439 US93143901A US6663813B2 US 6663813 B2 US6663813 B2 US 6663813B2 US 93143901 A US93143901 A US 93143901A US 6663813 B2 US6663813 B2 US 6663813B2
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- US
- United States
- Prior art keywords
- cooling
- molded articles
- cores
- batch
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
- B29C2045/7214—Preform carriers for cooling preforms
- B29C2045/7228—Preform carriers for cooling preforms turret-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
- B29C2045/7257—Cooling or heating pins with temperature adjustment enhancing surface structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6427—Cooling of preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6427—Cooling of preforms
- B29C49/643—Cooling of preforms from the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
Definitions
- the present invention relates to a molding system for producing articles, such as preforms and tubular parts, and to an innovative rotary cooling station employed in said system.
- the present invention further relates to a method for producing molded articles.
- cycle time is to limit the residence time of the preforms in the mold closed position by shortening the cooling step by a few seconds and thus ejecting the preforms from the mold sooner.
- One immediate benefit of a shorter residence time is that the content of acetylaldehyde (AA) in the final preform will drop by at least 5%.
- AA acetylaldehyde
- the preforms are removed from the cavities and retained on the injection cores for further internal cooling and for external cooling done by air blowers.
- the post-molding cooling step is performed while a new batch of preforms are formed on the same machine.
- This cooling approach is quite effective but the equipment is very expensive and complicated because three additional mold plates and three additional sets of injection cores are needed. This increases by three times the weight of the rotary mold plate block relative to a single face mold.
- these four mold plates and injection cores have to be manufactured with higher tolerances than those needed to make a single mold plate. This is due to the alignment requirements of the four sets of rotary cores with respect to a single stationary set of mold cavities. Also the relatively low speed of rotating, aligning and translating the heavy rotary mold core plate is a factor that significantly increases the molding cycle.
- U.S. Pat. No. 4,836,767 to Schad et al. relates to an injection molding machine with a rotary mold core plate having two sets of mold cores.
- This is a dedicated non-standard molding machine that has only three tiebars, one being used as a rotation axis for the mold core plate.
- This four face cooling station includes tubes that retain and cool the preforms from the outside. After being externally cooled, the preforms are ejected and dropped with the neck finish downward on a conveyor.
- U.S. Pat. No. 5,569,476 to Manen and Albers relates to a standard injection molding and a four face rotary cooling station. Each face of this rotary cooling station is movable and thus functions as a take-out robot because it can be moved laterally between the mold plates to remove the preforms and bring them to the cooling station.
- This design has several drawbacks: (a) the preforms are cooled solely externally on the retaining tubes belonging to the rotary cooling station; (b) the system is expensive and complicated as it must use four rather than just one robot arm that travel for a relatively long distance.
- This patent does not teach or suggest internal cooling, does not teach or suggest simultaneous internal and external cooling, and does not teach or suggest a single robot that feeds a rotary cooling station.
- the system of the present invention uses a standard injection molding machine with only one set of mold cores and a novel and innovative rotary cooling station that is independent from the injection molding machine, which cooling station is loaded with molded preforms by a high speed robot.
- the rotary cooling station uses cooling cores for internal cooling and cooperates with external cooling stations to effect cooling of the external surfaces of the molded articles or preforms.
- the cooling cores in a preferred embodiment, are designed to create an annular flow of cooling fluid within the molded articles, such as preforms or tubular parts, being cooled.
- the method for forming molded articles in accordance with the present invention broadly comprises the steps of providing a machine for manufacturing a plurality of molded articles and a rotary cooling device positioned externally of the machine, the rotary cooling device having a plurality of faces with cooling cores on them; forming a first batch of the molded articles in the machine; removing the first batch of molded articles from the machine and transferring the molded articles to a position. external of the machine; placing the molded articles of the first batch on a plurality of cooling cores on a first face of the rotary cooling device; and rotating the device to move the first batch of molded articles to a first cooling position.
- the method further comprises forming a second batch of molded articles in the machine; removing the second batch of molded articles from the machine and transferring the molded articles to the external position; placing the second batch of molded articles on the cooling cores on a second face of said rotating device; and simultaneously cooling the first and second batches of molded articles.
- FIG. 1 (A) is a top view of a first embodiment of an injection molding system according to the current invention
- FIG. 1 (B) is a top view of a second embodiment of an injection molding system according to the current invention.
- FIG. 2 (A) is a lateral view of the rotary cooling station used in the embodiment of FIG. 1 (A);
- FIG. 2 (B) is a lateral view of the rotary cooling station used in the embodiment of FIG. 1 (B);
- FIGS. 4 (A) and 4 (B) shows an alternative embodiment of a rotary cooling station in accordance with the present invention.
- FIG. 5 illustrates a system employed in the rotary cooling stations of the present invention for moving a cooling core relative to a take-out plate.
- FIGS. 1 (A), 1 (B), 2 (A) and 2 (B) illustrate embodiments of an injection molding system 10 in accordance with the present invention.
- the system 10 includes an injection molding machine 12 and a robot 14 which includes a take-out plate 16 , which take-out plate 16 transfers molded articles 18 , such as for example blowable preforms, from the mold 20 to an innovative rotary cooling station 22 , positioned externally of the injection molding machine 12 , which station is used to internally cool the preforms on a plurality of innovative cooling cores or pins 24 .
- the molding machine 12 may be any suitable molding machine known in the art and preferably includes two mold plates, namely a mold core plate 26 and a mold cavity plate 28 .
- the mold core plate 26 is axially movable along tiebars 32 between a mold open position and a mold closed position.
- the two mold plate halves 26 and 28 define, in the mold closed position, a plurality of mold cavity spaces (not shown).
- An injection unit 30 is provided to inject a moldable material under pressure into the mold cavity spaces in a known manner.
- the robot 14 including the take-out plate 16 is moved between the mold halves 26 and 28 to receive the molded articles 18 in a known manner and then transfer the molded articles 18 to a position outside of the molding area.
- the rotary cooling. station or device 22 is independent of the injection molding machine 12 and is placed outside the molding area to receive and cool the molded articles 18 provided by the robot 14 and the take-out plate 16 .
- the novel cooling cores 24 of the present invention After the molded articles 18 are internally cooled using the novel cooling cores 24 of the present invention, they are ejected from the cooling cores 24 using any conventional means known in the art, such as stripper plate 42 , stripper pins (not shown) inside the cooling cores, or an air blow system (not shown).
- the rotary cooling station 22 rotates about an axis 34 which is substantially parallel to the ground G. This means that when the molded articles 18 reach the bottommost portion of the rotation cycle, position IV in FIG. 2 (A), the face of the station 22 carrying the cooled molded articles 18 is also substantially parallel to the ground. This allows the molded articles 18 to be dropped onto a conveyor 50 through the movement of a retaining and stripping plate 42 .
- cooling cores 24 on a rotary station 22 in the form of a rotary turret, to internally cool the molded articles 18 allows the molded articles 18 to be simultaneously cooled from the outside using simple equipment without any need for precise alignment with the cooling cores 24 . Simultaneous cooling is very important as it prevents the formation of crystallinity zones inside the preforms, particularly in the dome or sprue gate portion 57 .
- the known prior art does not teach the use of internal and external cooling means in conjunction with a rotary cooling station that is independent of and external to the injection molding machine used to form the molded articles being cooled. Using an additional cooling device for internal cooling of preforms retained in cooling tubes would be more slower and difficult to make and align.
- cooling cores in accordance with the present invention, additional air absorption sucking conduits can be fabricated or machined inside the cooling cores. This effective approach avoids the need to use any other mechanical retaining means for the preforms or molded articles.
- FIGS. 3 (A)- 3 (C) illustrate two embodiments of a cooling core 24 in accordance with the present invention which can be used on the rotary cooling station 22 . Both of these embodiments provide cooling by air blowing and retention by air absorption. In both embodiments, the balance between the cold air cooling fluid introduced into the interior of the molded article 18 and the amount of air absorption rate is such as to hold the molded article or preform 18 firmly through a dragging effect.
- the core 24 has a central channel 74 which is connected to a source (not shown) of cooling fluid such as cooled air.
- the channel 74 ends in a nozzle 66 .
- a perforated ring 60 is attached to or integrally formed with the top of the core 24 .
- the ring 60 is designed to make contact with the interior surface 62 of the molded article 18 and better hold the molded article 18 aligned with the core 24 .
- the ring 60 includes a plurality of apertures or ports 64 for allowing air flowing out of the nozzle 66 to flow downwardly along the sides of the molded article to effect cooling of same and then.
- a stronger grip may be provided by tapering the top 68 of the cooling core 24 and by providing an aligning shoulder 70 that makes contact with the preform or molded article 18 in the neck finish portion 72 .
- air flows into the molded article via the channel 74 which is connected to a source (not shown) of cooled air, and through openings 76 and 78 into contact with the interior surfaces of the molded article 18 .
- the cooling air is preferably removed via channel 80 which is connected to a suction device (not shown) for creating the desired air absorption rate.
- FIGS. 3 (D) and 3 (E) Another cooling core embodiment is illustrated in FIGS. 3 (D) and 3 (E).
- the mechanical means comprise two semi-circular gripping collars 82 having a threaded inner portion 84 , which collars are used to clamp the molded articles 18 .
- the collars 82 are laterally movable so as to allow the molded articles 18 to be retained or released automatically.
- the collars- 82 also may have a forward-backward movement along the axis of the molded article to allow movement of the collars 82 through any retaining and stripping plate.
- the correlation between the lateral and axial movements of the collars 82 can be done using any suitable mechanical means (not shown) known in the art such as cams (not shown).
- the collars 82 may be sustained or supported by at least one holding ring 88 having radial perforations 90 which allow the blown cooling air to escape after cooling the preform or molded article 18 .
- cooling air enters the molded article 18 via a manifold 92 and a channel 94 in the cooling core 24 .
- the cooling air exits the outlet nozzle 96 , which is spaced a distance from the interior surface of the molded article 18 that enables the creation of an annular air flow pattern.
- the cooling air flows along the side walls of the article 18 and out via perforations 90 .
- the cooling core 24 may be formed from a porous material.
- the cooling core 24 as shown in FIGS. 3 (F) and 3 (G), may be formed from an aluminum material having a plurality of cooling channels 98 for causing a cooling fluid to flow into a tip portion 101 of the cooling core 24 and an outlet channel 100 machined therein, which outlet channel 100 also communicates with the tip portion 101 .
- the outlets of the channels 98 may be arranged in a cross-like pattern.
- the outlet channel 100 is preferably centrally arranged to remove the cooling air from the tip portion 101 and thus the interior of the molded article 18 .
- the robot 14 and the take-out plate 16 are movable between the mold halves 26 and 28 after they have been moved to the mold open position shown in FIG. 1 (A) and after the molded articles 18 have been somewhat cooled while the mold halves 26 and 28 are in the mold closed position.
- Any known robot such as a top or lateral entry robot, can be used for the robot 14 .
- the take-out plate 16 preferably has a plurality of retainers 56 , such as tubes, to hold each molded article or preform ejected from the mold. In a preferred embodiment, no cooling means is incorporated into the take-out plate 16 . This allows the plate 16 to be light and rapidly movable.
- the robot take-out plate 16 may further include means to eject the molded articles or preforms 18 for further handling.
- the innovative cooling station 22 includes a rotary block 110 having multiple faces 103 , for example four faces.
- the number of faces 103 actually depends on the number and duration of the temperature conditioning steps.
- Each face 103 comprises an array of novel cooling cores 24 used to hold the molded articles or preforms 18 during the cooling steps.
- Each face 103 of the rotary cooling station 22 also includes movable stripper plates 42 that allow the ejection of the molded articles or preforms 18 from the cooling cores 24 .
- other stripping methods and/or means can be employed to remove the preforms from the cooling cores 24 , such as stripping pins located inside each cooling core or by air blowing.
- the rotary movement of the block 110 can be achieved using any suitable means known in the art such as electrical servomotors (not shown).
- the rotary cooling stations 22 shown in the embodiments of FIGS. 1 (A), 1 (B), 2 (A) and 2 (B) also can be translated, for example along an axis parallel to the injection machine, towards and away from the take-out plate 16 , to permit the transfer of the preforms or molded articles 18 .
- Any suitable means known in the art may be employed to effect translation of the rotary cooling station.
- each face of the rotary cooling station may have a movable core plate 48 which is independently moved parallel to the station's face. This may be done for only a short distance towards and away from the take-out plate 16 to allow the transfer of the molded articles or preforms 18 from the take-out plate 16 onto the cores 24 .
- FIG. 5 illustrates such a movable core plate. As shown therein, the core plate 48 and the array of cooling cores 24 attached thereto are translated by using an air piston 44 placed at each corner of the station's face. In such an arrangement, the rest of the cooling station 22 remains stationary.
- the individual translation of the cooling cores 24 with each face of the rotary conditioning station 22 is done using very simple and known mechanisms. By using individual movements of each face, the transferring process is much faster and compact.
- any appropriate coolant known in the art such as air, liquid nitrogen or water, can be used and aggressively directed by the cooling cores 24 towards the inner walls of the molded articles or preforms 18 to effect cooling.
- cold air is used as a coolant, which cold air can be directed through the specific design of the cooling core towards any portion of the preform.
- the cold air will be directed towards the dome or sprue gate portion 57 of a molded article or preform 18 , which portion usually has the highest potential to crystallize due to poor post mold cooling.
- the cold air may also be directed to the neck finish portion 70 of the molded article or preform, especially when this portion has a thick wall.
- the space between the cooling cores 24 and the interior of the molded articles and preforms 18 is optimized to effect an annular flow pattern of the cooling fluid, which optimized flow is a function of the size and thickness of the preform's walls.
- the cooling cores 24 may be made of a material having superior thermal conductivity such as aluminum, aluminum alloys and the like.
- the molded articles or preforms 18 are retained on the rotary cooling station 22 by mechanical retaining means.
- a stripping and retaining plate that works in a manner similar to a PET preform mold stripper plate.
- This plate has two threaded collar halves that surround and engage the neck finish portion of each preform. This plate is thus able to separate and bring together the two halves during their movement back and forth against cam means. This would allow the threaded portions of the collars to engage the neck finish portion.
- the stripper plate has an additional innovative function which is to retain the preforms. In the known mold applications, the threaded portion of the collar is used as a part of the cavity, besides the ejection function. Each face of the rotary cooling station has one retaining and stripping plate that are moved using known means.
- additional external cooling stations 40 can be provided while the molded articles or preforms 18 are held on the rotary cooling station 22 . This is an option that can be used for higher cooling rate of any preform or if the internal cooling is not sufficient, for example, for preforms having thicker walls.
- This additional external cooling is preferably delivered by a device which blows ambient or refrigerated air onto the preforms that are simultaneously being cooled internally by the cooling cores 24 .
- several cooling stations 40 can be used for the external cooling steps. This can be done using a rotary cooling station with four or more faces.
- preferential cooling of the sprue gate portion of the preform and/or the neck finish portion of the preform can be done by selecting the design of the cores and by choosing the optimum configuration of the external cooling device.
- the temperature of the coolant can be varied continuously during the cooling process.
- the preforms can be thus cooled more or less aggressively depending on their size, wall thickness or their actual temperature before the cooling step is initiated.
- the new cooling station and the cooling methods described herein can be applied equally to single or multi-material preforms.
- the system shown in FIG. 1 (B) may be used to cool molded articles or preforms 18 made of a single or multiple materials according to the following steps: (a) molten material(s) is/are injected in the mold cavity spaces; (b) the molded articles or preforms 18 are somewhat cooled and at least partly solidified while the mold is in the mold closed position; (c) the mold is opened; (d) a high speed robot 14 having a take-out plate 16 is moved between the mold plates; (e) preforms 18 are transferred from the injection cores into the take-out plate 16 ; (f) the take-out plate 16 holding preforms 18 is moved outside the mold area to a position adjacent the innovative rotary cooling station 22 ; (g) preforms 18 are transferred from the take-out plate 16 to cooling cores 24 on a first face A of the rotary cooling station 22 ; (h) robot 14 is moved back towards the entrance of the molding area waiting to move again between the mold halves; and (i) the cooling station 22 is rotated, usually by
- step (a) the process then repeats itself from step (a) with the exception that the next batch of preforms is transferred to the cooling cores 24 on face B for cooling.
- the same process takes place without using the additional air cooling station to externally cool the preforms.
- This is shown in FIG. 1 (A) and is applicable for molded articles such as preforms having thinner walls.
- the take-out plate 16 may be able to hold a single or several batches of molded articles or preforms 18 .
- the take-out plate 16 may include means for cooling external surfaces of the preforms 18 using a fluid such as water or a gas such as blown cold air.
- Cooling may be effected using a “passive” approach, more exactly through the intimate contact between the cooling cores and the molded articles while the articles are retained on the rotary cooling station. This cooling approach is likely not as efficient as the one where the cooling cores include channels to guide a fluid coolant.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/931,439 US6663813B2 (en) | 1998-07-28 | 2001-08-16 | Method for cooling molded articles |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US9444598P | 1998-07-28 | 1998-07-28 | |
US09/311,961 US6299431B1 (en) | 1998-07-28 | 1999-05-14 | Cooling apparatus for injection molding machines |
US09/931,439 US6663813B2 (en) | 1998-07-28 | 2001-08-16 | Method for cooling molded articles |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/311,961 Division US6299431B1 (en) | 1998-07-28 | 1999-05-14 | Cooling apparatus for injection molding machines |
Publications (2)
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US20030205841A1 US20030205841A1 (en) | 2003-11-06 |
US6663813B2 true US6663813B2 (en) | 2003-12-16 |
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US09/311,961 Expired - Lifetime US6299431B1 (en) | 1998-07-28 | 1999-05-14 | Cooling apparatus for injection molding machines |
US09/931,439 Expired - Lifetime US6663813B2 (en) | 1998-07-28 | 2001-08-16 | Method for cooling molded articles |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US09/311,961 Expired - Lifetime US6299431B1 (en) | 1998-07-28 | 1999-05-14 | Cooling apparatus for injection molding machines |
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Cited By (11)
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US20030057600A1 (en) * | 2000-04-13 | 2003-03-27 | Mikael Wennberg | Device and a method for thermal treatment |
US20030227108A1 (en) * | 2002-03-06 | 2003-12-11 | Okerson C. Albert | Thick composite continuous molding process |
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US20070288120A1 (en) * | 2006-06-12 | 2007-12-13 | Husky Injection Molding Systems Ltd. | Apparatus for closing a hinged molded part |
US20090200698A1 (en) * | 2006-06-12 | 2009-08-13 | Husky Injection Molding Systems Ltd. | Method and apparatus for post-mold cooling a molded article |
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ITRM20030461A1 (en) * | 2003-10-07 | 2005-04-08 | Sipa Societa Industrializzazione P Rogettazione A | PLASTIC DEVICE AND PROCESS OF CONDITIONING OBJECTS. |
ITRM20040107A1 (en) * | 2004-03-02 | 2004-06-02 | Sipa Societa Industrializzazio | DEVICE AND CONDITIONING METHOD OF PLASTIC OBJECTS. |
ITRM20040108A1 (en) * | 2004-03-02 | 2004-06-02 | Sipa Societa Industrializzazio | DEVICE AND METHOD OF MOLDING OF PLASTIC OBJECTS. |
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US7867418B2 (en) * | 2007-09-24 | 2011-01-11 | Mars, Incorporated | Tool and apparatus for forming a moldable material |
DE102008027472B3 (en) * | 2008-06-09 | 2009-08-27 | Netstal-Maschinen Ag | Handling device for an injection molding machine and method for operating the same |
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US8557156B2 (en) | 2006-06-12 | 2013-10-15 | Husky Injection Molding Systems Ltd. | Method and apparatus for post-mold cooling a molded article |
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US20090297648A1 (en) * | 2008-05-23 | 2009-12-03 | Roberto Sicilia | Injection molding and temperature conditioning apparatus |
US7946836B2 (en) | 2008-05-23 | 2011-05-24 | Roberto Sicilia | Injection molding and temperature conditioning apparatus |
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US20190091909A1 (en) * | 2017-09-26 | 2019-03-28 | Brandon Fontaine | Injection Molding Assembly with Cooling Insert |
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